Claims
- 1. A process for preparing a carboxyl polymer comprising acrylic acid mer units, the process comprising preparing an alkoxide-polymerized addition polymer of an ester of acrylic acid, said polymer being a homopolymer or a copolymer with one or more other anionically copolymerizable ethylenically-unsaturated monomers wherein the average chain length of the addition polymer, n, is about 6 to about 30 mers and hydrolyzing the addition polymer by heating with aqueous caustic.
- 2. A process for preparing a carboxyl polymer comprising acrylic acid mer units, the process comprising preparing an alkoxide-polymerized addition polymer of an ester of acrylic acid, said polymer being a homopolymer or a copolymer with one or more other anionically copolymerizable ethylenically-unsaturated monomers wherein the average chain length of the addition polymer, n, is about 6 to about 30 mers and hydrolyzing the addition polymer by hydrolysis catalyzed by strong acid.
- 3. A process for preparing a functionalized polymer comprising the steps of preparing an alkoxide polymerized addition polymer of an ester of acrylic acid, said polymer being a homopolymer or a copolymer with one or more other anionically copolymerizable ethylenically-unsaturated monomers wherein the average chain length of the addition polymer, n, is about 6 to about 30 mers and transesterifying the addition polymer with a functional alcohol.
- 4. The process of claim 3 wherein the alcohol is a glycol.
- 5. The process of claim 3 wherein the alcohol is an oxazoladinyl ethanol.
- 6. The process of claim 3 wherein the alcohol is allyl alcohol.
- 7. A process for preparing an acrylic polyurethane prepolymer which comprises the steps of preparing the functionalized polymer of claim 4 and reacting the functionalized polymer with a diisocyanate.
CROSS-REFERENCE TO RELATED APPLICATION
This is a division of application Ser. No. 629,186 filed Nov. 5, 1975, now U.S. Pat. No. 4,158,736, which is a continuation-in-part of our pending application United States Ser. No. 241,177 filed on Apr. 5, 1972, now abandoned.
US Referenced Citations (9)
Non-Patent Literature Citations (3)
Entry |
"Anionic Oligomerization of Acrylic Esters", by Feit, European Poly. Jour., 1967, vol. 3, pp. 523-534. |
"Journal of Polymer Science", by Trekoval et al., Part c, 4 333, (1963). |
"Introduction to Polymer Chemistry", Wiley & Sons, by Stille, pp. 48-61, 166-172. |
Divisions (1)
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Number |
Date |
Country |
Parent |
629186 |
Nov 1975 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
241177 |
Apr 1972 |
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